The trend of Manonjaya salacca (snake fruit) which is one of the native Indonesian varieties is currently declining because its taste is less favorable than the others in the market. In the future, this variety may extinct, thus efforts are needed to revitalize the use of this salacca by diversifying processed products and supported by the socialization. The purpose of this research was to see the changes in knowledge and attitude of community in understanding and supporting the effort to develop and diversify Manonjaya salacca as local food to overcome nutrition problem especially in Manonjaya through nutritional counseling. This study used a one-group pretest-posttest design. The instrument used was a validated questionnaire. The sampling method was purposive sampling. The study was conducted in Manonjaya Subdistrict, Tasikmalaya Regency in May-August 2016. The extension media used were booklets and demonstrations of Manonjaya salacca processed products. The research respondents were students, teachers, canteen managers, parents of students in Junior High School (SMPN) 1 Manonjaya, and public as many as 61 people. The results of the nutrition counseling intervention showed that the average knowledge of respondents about Manonjaya salacca and its processed products increased significantly from 43.72 before the intervention became 73.11 after the intervention. This increase in knowledge is strengthened by the attitudes that show an understanding and support for utilizing processed Manonjaya salacca as an alternative to meeting the nutritional needs.